Hello good friend, there are many factors that can cause the flowers to fall, one of them is the excess of nitrogen, when the plants are in the flowering stage, nitrogenous fertilizers must be reduced to a minimum, especially in the cultivation of chili Peppers. , paprika and tomato and in terms of leaf fall, it may be that something is affecting the roots, such as the nematode, but these are indications that something is affecting the plant, it is best to pull one of them up and look at the roots . to detect the presence of any fungus or parasite. It is also important that the chile plants are grown in an environment with a lot of sun. I advise you to reduce the watering, and apply the fungicide to the soil based on: Metalaxil-M (45.28%)